Power Supply 783

This document is a technical schematic for the Digital Equipment Corporation Power Supply 783, dated November 1963. It details a power circuit designed to convert 115V AC, 60Hz input into dual DC outputs of +10V and -15V.

Key technical information included in the document:

• Circuit Components: The design utilizes a transformer (TI DEC T-41513), four diodes (D1–D4), and two 160,000 MFD 20VDC capacitors to manage output.
• Output Specifications: The +10V line must be kept between +9.5V and +11V, while the -15V line must be kept between -14.5V and -16V.
• Load Constraints: The document specifies maximum amperage capacities for the loads, noting that load limits change depending on whether both sides are loaded simultaneously or just one side is loaded. It also provides a specific equation for the sum of the output currents.